Granny panties is a slang term used for
old lady panties. In other words, old fashioned traditional
women’s underwear. They are conservative underwear made to cover
the modest body. A granny panty will have more fabric coverage
than various other types of underwear. They are rather opposite
compared to the general coverage of
g-strings &
thong
underwear.

Panties in American English are a form of
underwear worn by women. Panties are most often form-fitting, but may
also be loose. Granny panties can also refer to
knickers which is an British English word for underwear).
While panties were originally designed to cover the entire lower half of
the female torso, since the 1970s panties have had either no legs or, in
some cases, very short ones, and have become increasingly briefer over
time. Apparently, no one told granny about the new panty styles
that are now available.

Classic briefs feature sides that extend below the
hip. Sometimes these are called "granny panties" by young women.

If you enjoy wearing granny panties, you may also
have interest in mom jeans.